育成期飼糧蛋白質與代謝能含量對褐色菜鴨產蛋性能之影響

本試驗旨在測定菜鴨育成期蛋白質與代謝能之需要量，並觀察育成期之發育對產蛋性能之影響，以期訂定一適合菜鴨使用之飼養標準。試驗係3×2複因子試驗，即三種不同飼糧蛋白質含量（11.5%，13.5%，15.5%）及二種代謝能含量（2600 kcal/kg，2900 kcal/kg），共六個處理組合，每處理三重複，每重複20隻，共使用360隻菜鴨供試。試驗處理期間為10至15週齡，共計六週，飼料及飲水採任食，全期採自然光照，15週齡以後改餵粒狀蛋鴨飼料。測定育成期之體重與飼料消耗量（分別於9、12、15週齡）及記錄5%產蛋率日齡，並在17週齡開始進行產蛋性能測定，產蛋期間之蛋重、蛋殼強度及產蛋率等性狀，則每4週測定一次。試驗結果顯示，在生長性狀方面，育成期飼糧蛋白質與代謝能含量對生長期之體重皆無顯著之交感作用，代謝能2900 kcal/kg組每隻每日採食量顯著的較代謝能2600 kcal/kg組少（P＜0.05）。在產蛋性狀方面，育成期蛋白質與代謝能含量對全期（17～49週齡）蛋重、蛋殼強度以及產蛋率並無顯著之影響。由本試驗之結果得知，菜鴨育成期蛋白質與代謝能之需要量，在任飼狀態下，飼糧含蛋白質11.5%、代謝能2600 kcal/kg，即足夠產蛋菜鴨產蛋之所需。

關鍵字

育成期；蛋白質；代謝能；褐色菜鴨；產蛋性能

並列摘要

The study was to determine the protein and metabolizable energy requirements between 9 to 15 weeks of age in Brown Tsaiya ducks. A 3 × 2 factorial design, with three levels of crude protein (11.5, 13.5 and 15.5%) and two levels of metabolizable energy (2600 and 2900 kcal/kg) was used in this study. There were three replicates in each treatment with 20 ducks per replicate. Feed and water were supplied ad libitum and natural photoperiod was employed during the experimental period. Pellet layer diet was fed after 15 weeks of age. The body weight and feed consumption were determined at 9, 12, and 15 weeks of age. The age at 5% egg production was also recorded. Egg weight, eggshell strength, and egg production were determined every four weeks and egg production was recorded daily throughout this study beginning at 17 weeks of age. The results showed that there was no significant interaction between dietary protein and energy levels during the developing period on the body weight. The ducks fed diets with ME 2900 kcal/kg had significantly (P＜0.05) lower feed intake than those of ME 2600 kcal/kg group. No significant interaction was found between dietary protein and metabolizable energy on the egg weight, eggshell strength, and egg production. The diet with CP 11.5% and ME 2600 kcal/kg was recommended for Brown Tsaiya ducks fed ad libitum during the developing period.

並列關鍵字

Developing period ； Protein ； Metabolizable energy ； Brown Tsaiya ducks ； Laying performance

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